Aluminium oxide is impermeable and, unlike the oxide layers on many other metals, it adheres strongly to the parent metal. If damaged mechanically, aluminiumâs oxide layer repairs itself immediately.
Saliva helps remove oral waste and cavity-causing bacteria, protects teeth from decay by neutralizing harmful acids, and helps re-mineralize tooth enamel. Saliva also keeps oral tissues healthy by preventing infection by controlling bacteria and fungi in the mouth.
Saliva is important because it plays a vital role in maintaining your oral health. It helps to build and maintain both the soft and hard tissues in your mouth. When you have a reduced flow of saliva, you can suffer from oral health problems, such as tooth decay or oral infections.